期刊
CHEMICAL PHYSICS LETTERS
卷 345, 期 1-2, 页码 25-28出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S0009-2614(01)00851-X
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We report the measurement of the acidic sites in three different samples of commercially available full-length purified single-walled carbon nanotubes (SWNTs) - as obtained from CarboLex (CLI), Carbon Solutions (CSI) and Tubes@Rice (TAR) - by simple acid-base titration methods. Titration of the purified SWNTs with NaOH and NaHCO3 solutions was used to determine the total percentage of acidic sites and carboxylic acid groups, respectively. The total percentage of acidic sites in full length purified SWNTs from TAR, CLI and CSI are about 1-3%. (C) 2001 Published by Elsevier Science B.V.
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